The Latics are outside the Premier League relegation zone on goal difference alone ahead of the six-pointer, which QPR are desperate to win as they try to start making up the seven-point gap they have between them and safety.
Martinez feels QPR's results recently, back-to-back 3-2 defeats by Aston Villa and Fulham, nre not a guide to the way they have been playing and he will not be drawn into a false sense of security.
He told the Wigan Evening Post: "People are talking about the results QPR have had and the points they have and I don't feel it gives a true representation.
"You look at the performances they have had since January, when they renewed the squad, and it's not a squad that deserves to be where it is in the table.
"I saw them against Fulham, and although they made big mistakes at the back that cost them goals, they created plenty of chances and are an extremely dangerous side.
"I feel they were very unfortunate not to get anything out of the last two games against Fulham and Aston Villa because, on balance, they were the better side.
"We're not going to become confused by their last two results. We know they are capable of winning games and we'll be well aware of what can happen.
"We can't afford to be worrying about QPR - all we can do is worry about ourselves. We don't have enough points on the board and we are in a relegation battle.
"We have played most of our best football away from home this season and we need to make sure we continue at that level."